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The onset of the North Atlantic igneous province in a rifting perspective

Jogvan Hansen, Dougal A. Jerram, K. McCaffrey and S. R. Passey
The onset of the North Atlantic igneous province in a rifting perspective (in From the British Tertiary into the future; modern perspectives on the British Paleogene and North Atlantic igneous provinces, Dougal A. Jerram (prefacer), Kathryn M. Goodenough (prefacer) and Valentin R. Troll (prefacer))
Geological Magazine (May 2009) 146 (3): 309-325

Abstract

The processes that led to the onset and evolution of the North Atlantic Igneous Province (NAIP) have been a theme of debate in the past decades. A popular theory has been that the impingement on the lower lithosphere of a hot mantle plume (the "Ancestral Iceland" plume) initiated the first voluminous outbursts of lava and initiated rifting in the North Atlantic area in Early Palaeogene times. Here we review previous studies in order to set the NAIP magmatism in a time-space context. We suggest that global plate reorganizations and lithospheric extension across old orogenic fronts and/or suture zones, aided by other processes in the mantle (e.g. local or regional scale upwellings prior to and during the final Early Eocene rifting), played a role in the generation of the igneous products recorded in the NAIP for this period. These events gave rise to the extensive Paleocene and Eocene igneous rocks in W Greenland, NW Britain and at the conjugate E Greenland-NW European margins. Many of the relatively large magmatic centres of the NAIP were associated with transient and geographically confined doming in Early Paleocene times prior to the final break-up of the North Atlantic area.


ISSN: 0016-7568
EISSN: 1469-5081
Coden: GEMGA4
Serial Title: Geological Magazine
Serial Volume: 146
Serial Issue: 3
Title: The onset of the North Atlantic igneous province in a rifting perspective
Title: From the British Tertiary into the future; modern perspectives on the British Paleogene and North Atlantic igneous provinces
Author(s): Hansen, JogvanJerram, Dougal A.McCaffrey, K.Passey, S. R.
Author(s): Jerram, Dougal A.prefacer
Author(s): Goodenough, Kathryn M.prefacer
Author(s): Troll, Valentin R.prefacer
Affiliation: Durham University, Department of Earth Sciences, Durham, United Kingdom
Affiliation: University of Durham, Department of Earth Sciences, Durham, United Kingdom
Pages: 309-325
Published: 200905
Text Language: English
Publisher: Cambridge University Press, London, United Kingdom
References: 125
Accession Number: 2009-060827
Categories: Solid-earth geophysicsIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
N61°19'60" - N62°30'00", W08°00'00" - W06°00'00"
Secondary Affiliation: British Geological Survey, GBR, United KingdomUppsala University, SWE, SwedenFaroese Earth and Energy Directorate (Jardfeingi), FRO, Faeroe Islands
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Cambridge University Press. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 200933
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